Domestic water tube boiler



Oct. 28, 1947. I c, WEBB 7 2,429,904

DOMESTIC WATER TUBE BOILER Filed Dec. 26, 1944 4 4 Sheets-Sheet 1- 4Oct. 28, 1947." v E. c. WEBB 2,429,904

' DOMESTIC WATER TUBE BOILEfi Filed Dec. 26, 1944 T 4 Sheets-Sheet 2 towaw '//\/z/E/\ TUR E. c. WEBB DOMESTIC WATER TUBE BOILER- Filed Dec. 26,1944 4 Sheets-Sheet 3 v UVMENTUR E-:. C. WEBB 0a. 28, 1947. I V E. c.WEBB 2,429 904 DOMESTIC WATER TUBE BOILER Filed Dec. 25. 1944 4Sheets-Sheet 4 24 TTUFi/VEW I ?atented Oct. 28, 1947 DOMESTIC WATER TUBEBOILER Ernest C. Webb, Bay Village, Ohio, assignor to Iron FiremanManufacturing Company, Portland, Oreg.

Application December 26, 1944, Serial No. 569,814

4 Claims. 1

This invention relates generally to heating plants and particularly to adomestic water tube boiler.

The main object of this invention is to construct a boiler in which thearrangement of the heating. surface inv the combustion chamber andparticularly the arrangement of the tubes in the secondary heatingsurface. will produce new and useful results.

The second object is to produce a boiler of the class described, havin alarge amount of radiation and in which the tubes are so arranged andformed as to produce a tremendous passageway for the gases, whereinalarge portion of the heat may be extracted therefrom and whereincertain portions of the tubes unite to form a bridge wall while otherportions form heat conductors which are constantly scoured by therapidly passing gases.

The third object is to produce a boiler of the class described, in whichthe fly ash will be encouraged to settle in a definite location fromwhich it is easily removed.

The fourth object is to construct a boiler of the class described whichwill be small in weight and size with relation to its rating, and whichwill present no unusual manufacturing difficulties.

The fifth object is to construct a boiler of the class described inwhich the various sections may be fabricated and later joined into acomplete assembly,

I accomplish these and other objects in a manner set forth in thefollowing specification as 11- lustrated in the accompanying drawing, inwhich Fig. l is an external view of the boiler.

Fig. 2 is afront elevation of the boiler with the setting broken away invertical section.

Fig. 3 is a rear elevation of the boiler with the setting broken away invertical section.

Fig. 4 is a horizontal section taken along the line fi4 in Fig. 3.

Fig. 5 is a horizontal section taken along the line 55 in Fig. 3,

Fig. 6 is a fragmentary vertical section taken along the line 66 in Fig.4. I

Fig. 7 is a perspective view of the brid e wall section.

Similar numerals refer to similar parts throughout the several views.

Referring in detail to the drawing, there is shown a pair of laterallowermost manifold members II] disposed along the sides of the boilerwithin the brick walls I I, whose lowermost portions I2 are thickened tosupport the manifolds ID. The

manifolds I!) are joined by flanged connections I3 to the lowermost rearmanifolds I4, Above and somewhat to the rear of the manifold I4 is theuppermost rear manifold I5. The uppermost manifold I5 is joined by theflanged connection I6 to the cylindrical shell H, which constitutes themain storage reservoir.

Between the manifold members It] and. the shell H are the vertical tubesI8, whose upper portions I9 are preferably turned in a radial directionwith relation to the shell IT, The tubes l8 are placed as close togetheras is practical and are separated from the walls II by means of arefractory 20, which also covers the top of the shell H, as does therounded. brick work 2 I.

Surrounding the fire door opening. 22 are the foremost tubes 23 whichextend between the manifolds H1 and the opposite side of the shell IT bybeing formed substantially as shown, whereby the heat is absorbed fromthe boiler front, and yet the fire door opening 22 is not blocked.

Referring particularly to Figs. 6 andl, it will be seen. that there arethree definite groups of connecting tubes 23 between the manifolds I4and [5, The central group of tubes 24 are substantially vertical exceptthat the lower ends 25 are curved slightly forward to point of entranceinto the manifold I4. Also connecting the manifolds I4 and I5 are theforemost tubes 26 and.

intermediate tubes 21, whose lowermost portions along an intermediateportion and then extend vertically in the plane of the central tubes 24,the portions 25 of the tube 21 being spaced somewhat greater than thediameter of the tubes.

The rearmost tubes 29 are curved as illustrated, to assist in formingthe tortuous passageway 30, which increases the length of gas travel andencourages the deposit of the fly ash in the trough 3| formed above themanifold l4 between the central tubes 24 and the foremost tubes 26 andintermediate tubes 21, Within the trough 3! is disposed an ash removingworm 32, through which fly ash can be taken out through the side of theboiler or back into the combustion chamher as desired. The position ofthe stack connection 33 and its supporting brick work 34 is alsoindicated. No means for supplying heat to the boiler is indicated, as itforms no part of the present invention.

It is desirable in most cases to provide a sec- 0nd row of pipes 35 justinside of the pipes I8 in order to pick up the intense radiant heat anddeliver same to the Water.

While I have thus illustrated and described my invention, it is not mydesire to be limited to the precise form shown herein, and I intend tocover such forms and modifications of the invention as fall fairlywithin the appended claims.

I claim:

1. A boiler of the class described, characterized by having enlargedheat collecting manifolds disposed along the sides and at the bottom ofthe combustion space and having a transverse manifold connecting saidfirst mentioned manifolds and an upper manifold disposed above saidtransverse manifold, a boiler shell adjacent to said up per manifold andconnected thereto, circulating pipes disposed along the sides of thefire box connecting the lateral manifolds with the boiler shell, saidcirculating pipes being in close relationship to each other, an innerrow of circulating pipes more widely spaced than are the first mentionedcirculating pipes and inclined inwardly at their upper ends toward thecentral portion of the boiler shell, and four sets of tubes connectingsaid upper and lower manifolds, the first set being vertical, the secondset being forwardly curved, the third set being disposed in front of thefirst set and rearwardly curved and joined at the ends to theirrespective manifolds, and the fourth set occupying space between theupper portion of the first set and the lower portion of the third set,the intermediate portion of said fourth set constituting a heatabsorbing grid through which the product of combustion must passdownwardly, the space between the second and third sets of tubesconstituting a fl ash collection trough and an ash removing wormdisposed in the lower portion of said trough.

2. A boiler of the class described characterized by having a bridge wallformed of an upper and lower horizontal manifold and four sets of connecting tubing consisting of substantially straight vertical centraltubes, a plurality of vertical foremost tubes disposed in front of saidcentral tubes, intermediate tubes between the lower ends of saidforemost tubes and the upper ends of said central tubes and rearmosttubes curving backwardly and connected to the upper and lower manifoldswhereby gases fiOWing through said tubes must pass over the closelyspaced lower portions of the foremost and intermediate tubes and underthe closely spaced upper portions of the central tubes and intermediatetubes.

3. A boiler of the class described having an elevated shell and having acontinuous manifold disposed under the sides and rear end of said shell,the side portions of the said manifold having a plurality of closelyarranged pipes communicating with said shell, an upper manifold adjacentto the lower end of said shell and substantially above a portion of saidlower manifold, a plurality of spaced vertical tubes connecting saidupper and lower manifolds and a plurality of forwardly bent manifoldconnecting tubes whose upper and lower ends are disposed between theplanes of said vertical tubes, and means for shielding the front of theboiler against heat, consisting of pipes extending from said firstmentioned tubular members across the front of the furnace and around thefire door portion thereof.

4. In a boiler of the class described, a combination of a pair ofsuper-imposed horizontal manifolds mounted in the rear of a boilercombustion space, a plurality of spaced vertical tubes connecting saidmanifolds, a plurality of rearwardly curved tubes connecting saidmanifolds, occupying planes between said Vertical tubes, a second set ofvertical tubes disposed in front of said first mentioned vertical tubeshaving their ends turned backwards radially into said manifolds, and aplurality of intermediate tubes connecting said manifolds, portions ofwhich intermediate tubes are inclined, while the upper ends of which arebetween and in alignment with said first mentioned tubes, and thelowermost ends of which are between and in alignment with the lowerportions of the second set of vertical tubes, whereby gases flowing fromthe combustion chamber of the furnace are forced to rise over theinclined portions of said intermediate tubes.

ERNEST C. WEBB.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,360,260 Nagel Oct. 10, 19441,836,119 Huster Dec. 15, 1931 1,851,842 Huster Mar. 29, 1932

